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    <title>ShellCheck: SC2107 – Instead of `[ a && b ]`, use `[ a ] && [ b ]`.</title>
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    <h1>SC2107 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2107">See this page on GitHub</a>
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    <h2 id="instead-of--a--b--use--a----b-">Instead of
<code>[ a &amp;&amp; b ]</code>, use
<code>[ a ] &amp;&amp; [ b ]</code>.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2107.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="bu">[</span> <span class="st">&quot;</span><span class="va">$1</span><span class="st">&quot;</span> <span class="ot">=</span> <span class="st">&quot;-v&quot;</span> <span class="er">&amp;&amp;</span> <span class="ex">-z</span> <span class="st">&quot;</span><span class="va">$2</span><span class="st">&quot;</span> ]</span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2107.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="bu">[</span> <span class="st">&quot;</span><span class="va">$1</span><span class="st">&quot;</span> <span class="ot">=</span> <span class="st">&quot;-v&quot;</span> <span class="bu">]</span> <span class="kw">&amp;&amp;</span> <span class="bu">[</span> <span class="ot">-z</span> <span class="st">&quot;</span><span class="va">$2</span><span class="st">&quot;</span> <span class="bu">]</span></span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p><code>&amp;&amp;</code> can not be used in a <code>[ .. ]</code> test
expression. Instead, make two <code>[ .. ]</code> expressions and put
the <code>&amp;&amp;</code> between them.</p>
<h3 id="exceptions">Exceptions:</h3>
<p>None.</p>
<h3 id="related-resources">Related resources:</h3>
<ul>
<li><a href="https://mywiki.wooledge.org/BashPitfalls#pf6">Bash
Pitfalls: [ "$foo" = bar &amp;&amp; "$bar" = foo ]</a></li>
<li><a
href="https://stackoverflow.com/questions/16396146/using-and-operator-in-if-statement-bash-script/16396181">StackOverflow:
using and (&amp;&amp;) operator in if statement bash script</a></li>
</ul>
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    <p style='font-size: 80%'><a href="../index.html">ShellCheck</a> is a static analysis tool for shell scripts. This page is part of its documentation.</p>
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